In a population of 271 dd parrots, predators kill 55. what is the approximate fitness of the dd genotype? fitness of dd: 20% fitness of dd: 40% fitness of dd: 60% fitness of dd: 80%

Fitness differ from one genotype to the other. Usually it depends on the survival rate and reproduction rate of a particular genotpye. As for dd parrots, reproduction rate are equal. thus, fitness is equal to survival rate.

computing for fitness = survivors / maximum survivors x100

where

survivors = 271-55

= 216 dd parrots.

fitness = 216 dd parrots/271 dd parrots

fitness = 79.7% round off to 80%

Fitness of dd parrot is 80%.